Culinary vessel.



PATBNTED JULY 25, 1905.

0. M. KNOX. CULINARY VESSEL.

APPLIOATION FILED MAY 11. 1905.

' attnvwg W761 WWW UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented July 25, 1905.

Application filed May 11,1905. Serial No. 259,988.

To all whom it may concern.-

Be itknown that I, ORVILLE M. Knox, a citizen of the United States,residing at Oneida, in the county of Madison and State of New York, haveinvented certain new and useful Improvements in Culinary Vessels, ofwhich the following is a specification.

This invention relates to culinary vessels, and especially to those ofthe type known as boilers, and has for its objects to produce acomparatively simple inexpensive device of this character in which anextended surface is presented to the action of the flame or otherheating medium, thus insuring a rapid heating of the vessel andaconsequent economizing of fuel and one wherein the surface of thevessel subjected to the action of heat is inclosed, thus to confine theheat to and 0bviate its rapid radiation from said surface.

A further object of the invention is to provide a device of this classcomprising an outer jacket and an inner vessel-section in which thelatter is wholly surrounded by an inclosed heating-chamber, therebysubjecting its entire surface to the action of heat, and one wherein thevessel-section is firmly supported and braced within the jacket, thusinsuring strength and durability of the vessel as a whole.

WVith these and other objects in view the invention comprises the novelfeatures of construction and combination of parts more fully hereinafterdescribed.

In the accompanying drawings, Figure l is a vertical longitudinalsection taken centrally through a vessel embodying the invention. Fig. 2is a top plan view of the same with the cover removed. Fig. 3is a bottomplan view of the vessel. Fig. 4: is a cross-section taken on the line 4f of Fig. 1.

Referring to the drawings, 1 designates an outer open-ended jacket orcasing of tubular form composed of sheet metal or other appropriatematerial and having at its lower end an outturned base flange 2 and atits upper end ears 3 for the attachment of a pivoted bail or handle 4,there being applied to the upper end of the jacket a removable cover 5.Disposed within the lower part of the jacket 1 and spaced therefrom toform a heating-chamber 6 is an inner vessel member or section 7,constituting the lower portion of the vessel or utensil, the upperportion of which is formed by the upper part of the jacket, said section7, which preferably has downwardly-tapered side walls, having its"bottom 8 arranged in a plane common with that of the lower end of thejacket and being provided at its upper open end with an outturned flange9, formed to fit within the jacket, to which it is united in anyappropri ate manner, and constituting a closure for the normally openend of the chamber 6.

The vessel 7 is supported and braced within the jacket 1 by a pluralityof bracing members or webs 10, situated in the chamber 6 atappropriately-spaced intervals around the vessel 7 and radially betweenthe latter and jacket, said braces, which are extended wholly throughthe chamber longitudinally from the flange 9 to the bottom 8 of thevessel, being provided with longitudinal edge flanges 11, attached bysoldering or in other suitable manner to the vessel and jacket.

In practice When the utensil is seated upon a stove the flame or otherheating medium will pass into the inclosed chamber around thevessel-section 7 for action upon the bottom and sides of the latter,which thus presents an extended surface to the action of the heat andinsures rapid heating of the contents of the vessel and an economizingof fuel, it being observed. that, owing to the vessel 7 being inclosedby and spaced from the jacket, radiation of the heat from the vessel 7is measurably retarded, thus preventing waste of heat. Further, it isapparent that under the foregoing construction a heating-chamber ofample dimensions is provided around the inner vessel and that the latteris firmly connected and braced within the jacket, while the flange 9subserves the twofold function of a horizontal brace between the jacketand upper end of the vessel, said brace being continuous around thelatter and a closure for the upper end of the heating-chamber.

Havingthus described the invention, what is claimed as new is- 1. Acooking utensil comprising an outer jacket and an inner vessel spaced toproduce a chamber surrounding the latter, said chamber being open at itslower end and closed at its top, and braces in the chamber extendingbetween and attached to the vessel and jacket.

2. A cooking" utensil comprising an outer In testimony whereof I affixrny'signaturein acket and an inner vessel surrounded by and presence oftwo wltnesses. spaced from the jacket to produce a chamber, IL 1 aflange 0n the vessel constituting a closure for ORV LE A KNOX the upperend of the chamber, and braces 1n l/V1tnesses: the chamber extendingradially between and CHARLES H. MYERS,

attached to the vessel and jacket. EUGENE S. MACKIN.

